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30 lines
867 B
Diff
30 lines
867 B
Diff
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From 0f5fd4538774aa6c936bb8fc78611c3113bf19d7 Mon Sep 17 00:00:00 2001
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From: Dom Cobley <popcornmix@gmail.com>
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Date: Mon, 17 Apr 2023 15:21:41 +0100
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Subject: [PATCH] vc4_drv: Avoid panic when booted with no kms
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If kms/fkms overlay is not present we have no matching drivers
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and so match is NULL.
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It is not safe to call component_master_add_with_match with a null match argument.
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So don't do that
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Signed-off-by: Dom Cobley <popcornmix@gmail.com>
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---
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drivers/gpu/drm/vc4/vc4_drv.c | 3 +++
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1 file changed, 3 insertions(+)
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--- a/drivers/gpu/drm/vc4/vc4_drv.c
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+++ b/drivers/gpu/drm/vc4/vc4_drv.c
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@@ -456,6 +456,9 @@ static int vc4_platform_drm_probe(struct
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vc4_match_add_drivers(dev, &match,
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component_drivers, ARRAY_SIZE(component_drivers));
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+ if (!match)
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+ return -ENODEV;
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+
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return component_master_add_with_match(dev, &vc4_drm_ops, match);
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}
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